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Anti-Robber Pressure Pad 

Make] Projects 

Anti-Robber Pressure Pad 

Written By: Lewis 



Scissors (1) 

Strip of Copper (2) 

Soldering iron (1) 


9V Battery Holder (1) 

Wire cutter/stripper (1) 




Thick double-sided tape M) 


Black Card (1) 




9 Volt alkaline batterv (1) 


Beeper/Buzzer (1) 


Use a simple circuit and paper crafts to make your own burglar alarm! Here's how. 

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Page 1 of 4 

Anti-Robber Pressure Pad 

Step 1 — Anti-Robber Pressure Pad 

• Solder a length of wire to a strip of 

• Make two parts like this. 

Step 2 

• Solder one of the wires to a 9V 
battery pack. 

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Page 2 of 4 

Anti-Robber Pressure Pad 

Step 3 

• Solder a beeper to the other copper 

♦ Then connect the other side of the 
beeper to the battery pack. 

Step 4 

• Tape one of the strips of copper to 
an A4 sheet of cardstock. Tape the 
other copper strip to another card 
of the same size. 

• Make sure that the two strips of 
copper are positioned so that they 
touch each other when the cards 
are placed back to back. 

• Join the cards with double-sided 
tape. Use two layers of thick tape 
to hold the cards far enough apart 
so that the two copper strips don't 
touch each other until the cards are 
pressed together. 

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Page 3 of 4 

Anti-Robber Pressure Pad 

Step 5 

• Stick the other sheet of A4 black 
card on top. 

• Now place it where you want your 
alarm to sound and wait for 
someone to walk on it! 

st generated on 2012-10-31 02:37:03 PM. 

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